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为确定直缝焊管中轧辊与管坯间的接触压力分布规律 ,采取全息光弹性方法对该问题进行实验研究 ,并且利用有限元方法进行模拟计算 ,最终得出直缝焊管开口孔型轧辊与管坯间接触压力的分布规律 :管坯在开口孔型中处于弯曲成型阶段时 ,下轧辊与管坯的接触压力分布局限于轧辊的两侧 ;上轧辊与管坯的接触压力分布是以轧辊中点为界分为两个部分 ,每个部分内接触压力近似呈三角形分布。管坯在开口孔型中处于弯曲成型阶段时 ,接触压力分布是在弯曲成型阶段压力分布基础上中部叠加了一个挤压力
In order to determine the contact pressure distribution between the roll and the tube blank, the holographic photoelastic method was adopted to study the problem and the finite element method was used to simulate the problem. Finally, Billet contact pressure distribution: the tube in the open hole in the bending stage, the next roll and the tube contact pressure distribution is limited to both sides of the roll; the contact pressure distribution of the roll and the tube in the roll Point for the community is divided into two parts, each part of the contact pressure is approximately triangular distribution. Tube in the open hole in the bending stage, the contact pressure distribution is in the bending stage of the pressure distribution based on the central superposition of a squeeze